Yes, you can get them from this place:
Yokohama AVi-40 AVS 285/40/ZR15 V-141 x 2 including U.S or Canada delivery $1210.00. (Matra Magic.co.uk) $1210
pr including US/Canada delivery according to their site.
My DP came with 225 front & 285 rear Yokos. I emailed Yoko a few days ago and they said they don't make the 225.s. What is it with these IDIOT tire companies (Pirelli & Yoko). They make the fat 15 rears and don't make a matching front? Pirelli use to make the occasional random batch of the 225's, not sure if they still do.
I switched to Michelin TB15's, which are considerably lighter than the Yokos.